406161901 has 4 divisors (see below), whose sum is σ = 407104704. Its totient is φ = 405219100.

The previous prime is 406161893. The next prime is 406161941. The reversal of 406161901 is 109161604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406161901 - 2³ = 406161893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 406161901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406161941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470755 + ... + 471616.

It is an arithmetic number, because the mean of its divisors is an integer number (101776176).

Almost surely, 2^406161901 is an apocalyptic number.

It is an amenable number.

406161901 is a deficient number, since it is larger than the sum of its proper divisors (942803).

406161901 is an equidigital number, since it uses as much as digits as its factorization.

406161901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942802.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 406161901 is about 20153.4587850324. The cubic root of 406161901 is about 740.5704762178.

The spelling of 406161901 in words is "four hundred six million, one hundred sixty-one thousand, nine hundred one".